1 38 
LONG 
GALLERY. 
Nat. Hist. 
bach where it occurs with quartz which sometimes 
passes into calcedony. 
Case 55. Part of this case is occupied by the remain¬ 
ing phosphates. Phosphates of alumina , to which 
belong—the ivavellite, a substance which was ori¬ 
ginally mistaken for a hydrate of pure alumina, and 
therefore called hy dr argillite, from Devonshire, Ireland, 
Brazil, Greenland, from Amberg in Bavaria (called 
lasionite ), from Aussig in Bohemia, on sand stone, &c.— 
the klaprothite , called also blue spar , and lazulite, and 
therefore sometimes confounded with the lapis lazuli in 
Case 37;—together with some other substances of 
which no exact analyses have as yet been published, 
though they are known to be chiefly composed of 
alumina, in combination with phosphoric acid, such 
as—the calaite , or real turquois , ( ( firuzali in Per¬ 
sian), an opaque gem found chiefly at Nishapur, in 
the province of Khorasan, Persia, in nodules or as small 
veins traversing a ferrugino-argiilaceous rock, and 
greatly esteemed on account of its beautiful blue colour, 
which will in most cases be sufficient to distinguish it 
both from the blue silicate of copper (Case 26) and 
from fossil bones, particularly teeth, impregnated with 
blue phosphate of iron, or carbonate of copper (the 
occidental turquoises of lapidaries). The kakorene, a 
rare substance of a crystalline diverging-fibrous struc¬ 
ture and yellow colour, found in the fissures of ar¬ 
gillaceous iron-stone, near Zbirow in Bohemia;—and 
the childrenite from Tavistock, in Devonshire: both 
which mineral substances contain alumina and oxide 
of iron combined with phosphoric acid, but re¬ 
quire to be subjected to closer chemical examination.— 
Phosphate of uranium .-—to these belong the yellozo ura - 
nite or uran mica from Autun, Limoges, Bodenmais; and 
the green uranite , or chalcolite, chiefly from Cornwall and 
Saxony: both of them phosphates of oxide of uraniun 
but distinct by containing, the former a small portion of 
phosphate of lime, and the latter an equivalent portion 
ol phosphate of copper.—This Case also contains 
the 
